I'll second "Un Chien Andalou" and add "Le Sangre de Poete"(1934 - Jean Cocteau - one of our Secret Masters re. any Conspiracy Theory) - This is a recreation of a dream as a metaphor for our (anyone's) existence. The falling through the mirror scene has been imitated a thousand times, but remember that this was the first film to do this. Yes, also, to "El Topo", though the more Zen Koans you know, the easier it is. And don't we all just love "Eraserhead"?

Also, have we all thought about the very last few seconds of "Taxi Driver" in a meaningful way? What doesthat final zoom into the mirror mean? Huh? Like, what does it mean, okay? . . .

I always say, if you want a nice, easy walk in the park, with no complications or dramer, then you simply can't beat "The Seventh Seal"(Ingmar Bergman, 1956) - Nice, screwball, gentle comedy & a predictable outcome at its best - And with cute animals!!~